Chelsea's newly appointed English head coach Frank Lampard attends his unveiling press conference at Stamford Bridge in London on July 4, 2019. - Frank Lampard was appointed Chelsea head coach on Thursday, confirming a dramatic return for one of the club's greatest ever players. Lampard has signed a three-year contract with the Premier League club, where he spent 13 years and became the team's all-time leading scorer with 211 goals. (Photo by ISABEL INFANTES / AFP)        (Photo credit should read ISABEL INFANTES/AFP/Getty Images)